The image shows a default channel that leads to a default lake. I need to redraw the lake format using SBuilderX313. I have no experience with this, so first I erased the default lake with a polygon set to 'Exclude All Terrain Items'. After that I drew the lake with a polygon defined as 'Hydro Generic Lake Perennial'. Now I need to set the edges of the lake with the same default border type. Someone with skills to pass me the tips of how create a lake?